Recovery of volatile liquid prom underground storage

ABSTRACT

VOLATILE LIQUIDS SUCH AS AMMONIA OR LIQUEFIED PETROLEUM GAS ARE RECOVERED FROM STORAGE IN AN UNDERGROUND CAVERN BY WITHDRAWING THEREFROM A STREAM OF VAPORIZED LIQUID. A PORTION OF THE VAPOR STREAM IS COMPRESSED AND CONDENSED AS PRODUCT BY COOLING, AND A SECOND PORTION IS HEATED AND THEN RETURNED TO THE CAVERN.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE may be purchased for 30 cents a sheet.

no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JANUARY 26, 1971 T882,013 RECOVERY OF VOLATILE LIQUID FROM UNDERGROUND STORAGE J. G. Davis II, and David S. Dillard, In, Ponca City, Okla., assignors to Continental Oil Company, Ponca City, Okla., a corporation of Delaware Filed May 6, 1969, Ser. No. 822,113 Int. Cl. B65g 5/00; E21f 17/16 U.S. Cl. 61.5 1 Sheet Drawing. 7 Pages Specification I7 I is 2! PRODUCT t Volatile liquids such as ammonia or liquefied petroleum gas are recovered from storage in an underground cavern by withdrawing therefrom a stream of vaporized liquid. A portion of the vapor stream is compressed and condensed as product by cooling, and a second portion is heated and then returned to the cavern.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes Jan. 26, 1971 J. G. DAVIS 1|, arm,

RECOVERY OF VOLATILE LIQUID FROM UNDERGROUND STORAGE Filed May 6, 1969 7 PRODUCT IN VENTOR.

R 0 D E D AV 6R M V m u L J GM 0 J9 m m 4 V A C D n x m V. d B Q ATTORNEY 

